Temporary stringer for telegraph, telephone, and electrical transmission lines



Nov. 22, 1927. 1,649,986

ER FOR TELEGRAPH, TELEPHONE, AND

M. K. SHARP TEMPORARY STRING ELECTRICAL TRANSMISSION LINES Filed Jan. 9,1926 INTER EJR. Wm7

- AIIY Patented Nov. 22 1927-.

UNETED STATES PATENT OFFICE.

MELARD KEITH SHARP, F SHARISIBURG, ILLINOIS.

TEMPOIBARY STRINGER FOB TELEGRAPH, TELEPHONE, AND ELECTRICAL TRANS-MISSION LINES,

Application fled January This invention has reference to a temporarystringer for telegraph, telephone and electrical transmission lines, andis adaptable for attachment to poles or other supports upon which wiresare strung and includes wire engaging insulators and stretching meansfor placing a tension upon the wires during relief or repair work.

The invention oomprehends a ratchet 1o toothed bar adapted to beattached to a. pole or support upon which wires are strung; a pluralityof sleeves slidably arranged on said bar each provided withtooth'engaging means and also with suitable insulator or non-conductormembers adapted to be brought into coincidence and engage wires strungon said pole orsupport to take the place of the otherwise permanentinsulators or non-conductors during repair or relief work. and includesa stretching I means adapted to be actuated to place a uniform tensionupon all of the wires engaged by the insulators or non-conductors onsaid sleeves.

That the invention may be more fully understood, reference is-had to theaccompanying ent description, illustrating a preferred embodiment of theinvention, in which 2-- Figure 1 is a top plan view of my temporarystringer showing the same applied to a pole or other support having apermanent strin er or cross-head which is shownin dotted lines andshowing how it functions as a temporary'wire stringer; I

Figure 2 is an elevation of Figure 1, and Figure 3 is a detail of aportion of the ratchet toothed bar and one of the sliding sleeves shownin partial section with the insulators or non-conductors and lockingmeans 4 thereon.

Like characters of reference denote corresponding parts throughout thefigures.

In the drawings, A designates a poleor support of usual construction towhich is shown attached a permanent stringer or cross-head B, braces Gtherefor and a plurality of insulators or non-conductors D, all of whichare shown in dotted lines.

The temporary stringer which is to take the place of the permanentstringer or crosshead B and insulators or non'conductors D includes anelongated bar 1 preferably in length corresponding to a stringer B, pro

vided with spaced sets of ratchet teeth 2 ardrawings forming a part ofthe pres- 4 9, 1926. Serial No. 80,320.

ranged preferably in the upper and lower edges of said bar. On this baris slidably arranged a plurality of sleeves 3 having openlngs t'disposedtherein in their upper and lower body port-ions with struck up ears toand between which lever pawls 6 are pivoted, as best seen in Figure 3;the active ends of said lever pawls arranged to slide on the upper andlower toothed edges of said bar 1 and adapted to engage the same asshown. Springs 7 disposed between the sleeves and the hand engagingportions of said lever pawls hold their active ends in engagement wlththe bar 1 and in engagement with the ratchet teeth in manner shown. Thesleeves may be moved along the bar by grasping the lever pawls anddrawin or pushing the sleeves along the bar an by tightly ping the leverpawls and compressing the springs 7, the pawls may be released in thebar, as will be understood. To one end and to the upper and lower sidesof the sleeves are connected insulators or-non-conductors S, which maybe of any'approved construcion. The bar 1 is preferably provided mediateits ends with an oifset body portion 9, see- Figure 1, to. permit apartial embracing of the pole or support A and to allow for placmg ofthe bar 1 so that its opposite end portions may lie parallel and infront of the insulators or non-conductors D/ on the stringer orcross-head B, in the manner shown in Figures 1 and 2.

The baril includes in its structure. a jack comprising a threaded member10 with a sleeve-like portion 11 telescoped thereon and having a grip 12adapted to engage the pole or support A. The member 10 and the sleeveportion 11 are connected at one end to the bar 1 and the main bodyportions thereof are spaced from'and lie parallel to the bar 1 as shownin Figure 1. Connected with the inner end of the sleeve-like portion 11are meshing. bevel gears 13 and 14, the latter having a threadedengagement with the threads of the member 10. To actuate the gearing, tomove the bar 1 and member 10 in relation to the sleeve-like portion 11,there is provided a hand lever 15 fulcrumed to the axis of the bevelgear 13 and provided with the toothed segment 16 adapted to engage theteeth of the bevel gear 13 to rotate it in opposite directions. To foldthe jack,

gripor cross-head B is damaged, cracked or broken or isout of repair tosuch an extent that rest-ringlng of wires is necessary, the temporarystringer is mounted in position and the sleeves 3 moved thereon intoposition to bring the insulators or non-conductors B into engagementwith the wires. The

sleeves are then moved to locked position to place *a preliminarytension upon the wires at which time or before, if desired, the braces18 may be secured in position. This done, the final tension maybe placedupon the wires by actuating the lever 15. The wires are now held by thistemporary stringer and work'may be proceeded with'to correct the damageof the stringer or cross head B to whatever extent may be necessary evento the extent of replacing the stringer or cross-head B. It is obvioustherefore, that by the use of this invention, that a linesman mayeffectively and efliciently repair stringers or cross-heads B in anellicient and quick manner and without danger to himself in the eventthe wires are electrical transmission. wires and without entanglement orcontact of any wires.

What I claim 1s:-

1. A temporary stringer for telegraph, telephone andelectricaltransmission lines, comprising an elongated bar provided withspaced sets ofratchet teeth along opposite edges, means for attachingthe stringer to a support including stretching means, and a plurality ofsleeves slidably arranged on said bar and rovided with insulators andratchet toothed engaging means.

2. A temporary stringer for telegraph, telephone and electricaltransmission lines, comprising an elongated bar bowed mediate its'endsto partially embrace a support, said bar being provided with a pluralityof spaced sets of ratchet teeth on oppositeedges thereof, a plurality ofsleeves slidable on said bar and having insulators attached thereto,lever pawls mounted on said sleeves to yieldingly engage the said barand the ratchet teeth thereon and means to attach the bar to a support,including a stretching means comprising telescopic members andassociated gearing.

3. In a device of the character described, a bar provided withsp'acedsets of ratchet teeth along opposite edges, a plurality of sleevesslidable on said bar, each sleeve having oppositely disposed insulatormembers, spring held lever pawls pivoted on said sleeves and arranged tohave engagement with the teeth on said bar, a support engaging meanscomprising a stretcher composed of telescopic members, one of which isthreaded, and gearing in operative engagement with said threaded member.I

In witness whereof, I have hereunto affixedmy hand this 28th day ofDec., 1925.

MILLARD KEITH SHARP.

